Technically .. not required. If do not want see the errors in the vRA Infa logs please follow the shutdown and start up sequence.

ShutDown :

1) Proxy Agents.

2) Dem Workers

3) Dem Orchestrator

4) IAAS Manager

5) IAAS Web

6) vRA VA

7) MS SQL Server ( Data Base)

Load Balancer

Start Up :

Reverse order of shutdown.